Rainbow Electronics MAX19998 - Manual (Page 20)

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
MAX19998
20 _____________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Application Circuit with tuning elements outlined in Table 1, V
CC = 5.0V, f RF = 2300MHz to 2900MHz, LO is high-side injected
for a 300MHz IF, P RF = -5dBm, P LO = 0dBm, T C = +25NC, unless otherwise noted.)
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc103
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
2750 2600 2450
7
8
9
10
11
6
2300 2900
T C = -40°C
T C = +85°C
T C = +25°C
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc104
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
2750 2600 2450
7
8
9
10
11
6
2300 2900
P LO = -3dBm, 0dBm, +3dBm
CONVERSION GAIN vs. RF FREQUENCY
MAX19998 toc105
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
2750 2600 2450
7
8
9
10
11
6
2300 2900
V CC = 4.75V, 5.0V, 5.25V
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc10
6
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
2750 2600 2450
24
25
26
27
23
2300 2900
T C = +85°C
T C = -40°C
T C = +25°C
P RF = -5dBm/TONE
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc107
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
2750 2600 2450
24
25
26
27
23
2300 2900
P LO = -3dBm, 0dBm, +3dBm
P RF = -5dBm/TONE
INPUT IP3 vs. RF FREQUENCY
MAX19998 toc10
8
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
2750 2600 2450
24
25
26
27
23
2300 2900
V CC = 5.0V V CC = 4.75V
V CC = 5.25V
P RF = -5dBm/TONE
2LO - 2RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc109
RF FREQUENCY (MHz)
2LO - 2RF RESPONSE (dBc)
2750 2600 2450
60
70
80
90
50
2300 2900
T C = -40NC
T C = +25NC
T C = +85NC
P RF = -5dBm
2LO - 2RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc110
RF FREQUENCY (MHz)
2LO - 2RF RESPONSE (dBc)
2750 2600 2450
60
70
80
90
50
2300 2900
P LO = +3dBm
P LO = -3dBm
P LO = 0dBm
P RF = -5dBm
2LO - 2RF RESPONSE
vs. RF FREQUENCY
MAX19998 toc111
RF FREQUENCY (MHz)
2LO - 2RF RESPONSE (dBc)
2750 2600 2450
60
70
80
90
50
2300 2900
V CC = 4.75V
V CC = 5.25V
V CC = 5.0V
P RF = -5dBm